Home / 209,433.18-311,781.02-208,187.62

Finding the Fourth Proportional to 209,433.18, 311,781.02 and 208,187.62

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Solution

The fourth proportional to 209,433.18, 311,781.02 and 208,187.62 is: 309,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,433.18 : 311,781.02 = 208,187.62 : x
  2. Step 2: Convert to fraction form
    209,433.18/311,781.02 = 208,187.62/x
  3. Step 3: Cross multiply
    209,433.18x = 311,781.02 × 208,187.62
  4. Step 4: Simplify right side
    209,433.18x = 64,908,948,514.97
  5. Step 5: Solve for x
    x = 64,908,948,514.97/209,433.18
  6. Step 6: Final answer
    x = 309,926.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.